You should only turn them on when you need them. If you become too dependent on them you won't be able to improve your listening skills.

As far as movie experience goes, having fun, storyline it is good to have subtitles (especially sci-fi oriented movies). As far learning goes best would be to find super interesting movie with moderate amount of dialogue. First time you watch it without subtitles ...trying find out what it is about. Second time you watch it with subtitles and pause and write down what you didn't know in your language. Then you check notes and try to find out how expressions you didn't understand differ in English and learn them by heart. If you find it hard to learn, just watch movie again without subtitles but with your notes.

I believe watching movies with subtitles is a good idea, this is as if you don't understand what a character has said, atleast the English subtitles can be there for clarification. Hope this helps Mohsen.

watching without subtitles works better for me now. it helps me sharpen my listening skills and makes my comprehension faster. i only turn it on when i missed to understand a particular phrase or dialogue.

I like watching foreign movies with subtitles, but you have to be careful not to become too dependent on the subtitles for the meaning. For example, I'm watching director Masaki Kobayashi's ghostly Kwaidan (a Japanese film) with English subtitles. However, my Japanese is strong enough that I noticed that sometimes the subtitles "abbreviate" what the characters are saying and some of the richness of the film gets lost. So, I'm going to watch it again - with the subtitles still on - but this time I'm going to pay more attention to what is actually being said.